fix typo in German README
fix typo in German README

Signed-off-by: Konstantin Haase <a90ceb496d9228fe419696e09c742e68f13c38e0@googlemail.com>

mwpastore/sinatra,defsprite/sinatra,JonRowe/sinatra,sinatra/sinatra,kyontan/sinatra,jkowens/sinatra,nottombrown/old-sinatra,ganmacs/sinatra,eileencodes/sinatra,burningTyger/sinatra,kyontan/sinatra,defsprite/sinatra,gferguson-gd/sinatra,wzheng1/sinatra,ryanshaw/sinatra,DoraALin/sinatra,blambeau/sinatra,autopp/sinatra,trexnix/sinatra,siberianbear/sinatra,frechei/sinatra,laplaceliu/sinatra,howtolearntocode/sinatra,nottombrown/old-sinatra,ksw2599/sinatra,jkowens/sinatra,jenalgit/sinatra,wzheng1/sinatra,RosenDimov/sinatra,jkowens/sinatra,RosenDimov/sinatra,DoraALin/sinatra,cyberid41/sinatra,burningTyger/sinatra,autopp/sinatra,lastcat/sinatra,kgrz/sinatra,Wirachmat/sinatra,ksw2599/sinatra,trexnix/sinatra,porras/sinatra,mwpastore/sinatra,Rayheng/sinatra,twanies/sinatra,eileencodes/sinatra,davydovanton/sinatra,porras/sinatra,nju520/sinatra,siberianbear/sinatra,laplaceliu/sinatra,sethuster/sinatra,sethuster/sinatra,ktw1222/sinatra,nju520/sinatra,midorineko/sinatra,mwpastore/sinatra,emiliocorpus/sinatra,davydovanton/sinatra,Rayheng/sinatra,kumji/sinatra,ABaldwinHunter/sinatra-classic,emiliocorpus/sinatra,ganmacs/sinatra,QLGu/sinatra,cyberid41/sinatra,ryanshaw/sinatra,kumji/sinatra,burningTyger/sinatra,dariubs/sinatra,dariubs/sinatra,bmizerany/sinatra,JonMidhir/sinatra,JonMidhir/sinatra,ABaldwinHunter/sinatra-classic,howtolearntocode/sinatra,QLGu/sinatra,marocchino/sinatra,JonRowe/sinatra,sinatra/sinatra,miyazawatomoka/sinatra,miyazawatomoka/sinatra,twanies/sinatra,d-bot/sinatra,Callygraphy/morrissey,JonMidhir/sinatra,frechei/sinatra,guidohcosta/sinatra,jenalgit/sinatra,nicoayala/sinatra,Wirachmat/sinatra,gferguson-gd/sinatra,ktw1222/sinatra,lastcat/sinatra,guidohcosta/sinatra,nicoayala/sinatra,midorineko/sinatra,d-bot/sinatra